(19)
(11) EP 0 482 736 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.01.1993 Bulletin 1993/03

(43) Date of publication A2:
29.04.1992 Bulletin 1992/18

(21) Application number: 91305175.1

(22) Date of filing: 07.06.1991
(51) International Patent Classification (IPC)5: G02F 1/37, G02B 6/12
(84) Designated Contracting States:
FR GB NL

(30) Priority: 22.10.1990 JP 285517/90

(71) Applicant: PIONEER ELECTRONIC CORPORATION
Meguro-ku Tokyo 153 (JP)

(72) Inventor:
  • Chikuma, Kiyofumi, c/o Corp. Res. and Devel. Lab.
    Iruma-gun, Saitama 350-02 (JP)

(74) Representative: Sturt, Clifford Mark et al
MARKS & CLERK 57-60 Lincoln's Inn Fields
London WC2A 3LS
London WC2A 3LS (GB)


(56) References cited: : 
   
       


    (54) Method of manufacturing an optical wavelength converter


    (57) An optical wavelength converter comprises a waveguide passage (1) made of nonlinear optical crystal, and a substrate (2a, 2b) provided in contact with the waveguide passage (1), all dielectric main axes of the nonlinear optical crystal being inclined with respect to an extending direction of the waveguide passage (1).
    According to a method of manufacturing an optical wavelength converter, a fluid consisting of an organic nonlinear optical crystal material introduced in a bending groove (6) in a substrate (5) is crystallized in order starting from the side of one portion of the bending groove (6) to thereby form an organic nonlinear optical crystal in the other portion of the groove (6), which has the crystal axis and dielectric main axis both inclined with respect to the extending direction of the other groove portion.






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